Robtex

Up: 220.227.200.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 220.227.204.0/23
Down right: 220.227.206.0/23

IP	Type	Hostname
220.227.205.243	PTR	webmail.hllbiotech.com
220.227.205.243	A	mail.hllbiotech.com
220.227.207.12	A	r1.sn-gxap5ojx-cage.gvt1.com
220.227.207.12	A	r1.sn-gxap5ojx-cage.googlevideo.com
220.227.207.13	A	r2.sn-gxap5ojx-cage.googlevideo.com
220.227.207.14	A	r3.sn-gxap5ojx-cage.gvt1.com
220.227.207.16	A	r5.sn-gxap5ojx-cage.gvt1.com
220.227.207.16	A	r5.sn-gxap5ojx-cage.googlevideo.com
220.227.207.18	A	r7.sn-gxap5ojx-cage.gvt1.com
220.227.207.18	A	r7.sn-gxap5ojx-cage.googlevideo.com
220.227.207.61	PTR	mail.iisc.ernet.in
220.227.207.62	PTR	mail.iisc.ernet.in
220.227.207.63	PTR	mail.iisc.ernet.in
220.227.207.64	PTR	mail.iisc.ernet.in
220.227.207.67	PTR	mail.iisc.ernet.in
220.227.207.68	PTR	mail.iisc.ernet.in
220.227.207.69	PTR	mail.iisc.ernet.in
220.227.207.70	PTR	mail.iisc.ernet.in
220.227.207.100	A	lp3.iisc.in